WO2013023777A1 - Capteur et procédé pour faire fonctionner ce capteur - Google Patents

Capteur et procédé pour faire fonctionner ce capteur Download PDF

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Publication number
WO2013023777A1
WO2013023777A1 PCT/EP2012/003455 EP2012003455W WO2013023777A1 WO 2013023777 A1 WO2013023777 A1 WO 2013023777A1 EP 2012003455 W EP2012003455 W EP 2012003455W WO 2013023777 A1 WO2013023777 A1 WO 2013023777A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
value
documents
malfunction
test
Prior art date
Application number
PCT/EP2012/003455
Other languages
German (de)
English (en)
Inventor
Jörg Frankenberger
Michael Bloss
Erich KERST
Original Assignee
Giesecke & Devrient Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Giesecke & Devrient Gmbh filed Critical Giesecke & Devrient Gmbh
Priority to ES12751261T priority Critical patent/ES2859675T3/es
Priority to EP12751261.4A priority patent/EP2745279B1/fr
Priority to US14/238,812 priority patent/US9245400B2/en
Publication of WO2013023777A1 publication Critical patent/WO2013023777A1/fr

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Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/128—Viewing devices
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D11/00—Devices accepting coins; Devices accepting, dispensing, sorting or counting valuable papers
    • G07D11/20—Controlling or monitoring the operation of devices; Data handling
    • G07D11/22—Means for sensing or detection
    • G07D11/235—Means for sensing or detection for monitoring or indicating operating conditions; for detecting malfunctions
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D11/00—Devices accepting coins; Devices accepting, dispensing, sorting or counting valuable papers
    • G07D11/20—Controlling or monitoring the operation of devices; Data handling
    • G07D11/26—Servicing, repairing or coping with irregularities, e.g. power failure or vandalism
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/1205—Testing spectral properties
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/121—Apparatus characterised by sensor details
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/20—Testing patterns thereon
    • G07D7/2075—Setting acceptance levels or parameters

Definitions

  • the invention relates to a method for operating a sensor, which is designed to test documents of value and a sensor which is designed to carry out this method.
  • sensors are usually used with which the type of value documents is determined and / or with which the value documents are checked for authenticity and / or their condition.
  • Such sensors are e.g. used for checking banknotes, checks, ID cards, credit cards, check cards, tickets, vouchers and the like.
  • the value documents are usually checked in a device for value document processing, in which, depending on the value-document properties to be tested, one or more sensors are included. To check the value documents, they are transported by means of a transport system individually along a transport path on the sensor.
  • a test medium is usually introduced into the detection range of the sensor in order to detect a measured value of the test medium with the sensor.
  • the value document check is interrupted and, instead of a value document, the test medium is introduced into the detection range of the sensor.
  • the disadvantage of this method is that a test medium must be provided and its assignment to the sensor must be ensured. In the case of multiple sensors or renewal of the test medium, eg due to degradation of the test medium, it can easily be confused, which can lead to incorrect test results. It has also been proposed to install a test medium in the sensor itself, for example in the housing of the sensor. To check the sensor function, the Checking the value documents is interrupted and the test medium is pivoted into the detection range of the sensor in order to detect measured values. Another disadvantage here is that the examination of the value documents for checking the sensor function must be interrupted.
  • the method according to the invention relates to a sensor which is designed to test value documents.
  • the sensor may be a sensor for testing optical or magnetic or electrical or mechanical properties.
  • Shanks of value documents to check the value documents on their authenticity, their nature, their condition or their quality.
  • For checking the value documents at least one operating mode of the sensor is provided in the sensor, in which it is determined which measured values the sensor should detect for checking the value documents and how the detected ones
  • Measured values are to be evaluated.
  • the sensor has e.g. a data memory in which the intended operating mode or information on the intended operating mode are stored, which the sensor uses to check the value documents.
  • One or more modes of operation may be provided in the sensor, e.g. for checking one or more value document types.
  • the senor performs a self-test, by which it independently checks its functionality.
  • the sensor may be designed to carry out one or more self-tests. If no malfunction is detected in the self-test performed by the sensor, the sensor for checking the value documents uses the operating mode which is provided for checking the value documents and carries out a check of the value documents in the intended operating mode.
  • the sensor responds to at least one malfunction identified in the context of the self-test, which would hinder the examination of the value documents, by the sensor for checking the value documents being replaced by a modified operating mode instead of the operating mode provided for checking the value documents Operating mode used.
  • the modified operating mode at least one other measured value of the sensor is used for checking the value documents than the operating mode provided for in the check of the value documents. in the Contrary to the usual function failure of the sensor, the sensor can therefore be operated despite the malfunction continue to check the value documents. Although the malfunction would interfere with the verification of the value documents, the sensor fails only if there is no possibility for the sensor to bypass the malfunction using the modified operating mode.
  • the senor will be able to bypass the malfunction so that, instead of failing, it can continue to operate and, despite the malfunction, can check the value documents.
  • Using a modified operating mode that uses a different reading will reduce the number of sensor failures.
  • the use of another measured value also has the advantage that the evaluation of the measured values only needs to be changed slightly, since only the provided measured value needs to be replaced by the other measured value, but the evaluation can otherwise remain the same.
  • the other measured value is for example a measured value which is derived from measured values of the sensor which are used in the intended operating mode but are not affected by the malfunction.
  • the other measured value may be a measured value that is interpolated or extrapolated from the detected measured values.
  • the other measured value can also be a measured value of the sensor which is not intended at all for checking the value documents in the intended operating mode.
  • the other measured value may, for example, be an additionally detected measured value which is not detected in the intended operating mode but which is detected and evaluated in the modified operating mode, or it may be an additionally evaluated measured value which, although detected in the intended operating mode, is not evaluated becomes.
  • Using an additional metric has the advantage that a measurement information lost due to the malfunction can be at least partially compensated by the additional measured value.
  • a measurement-related measurement value that should be used in the intended operating mode may be omitted.
  • the affected measured value is also detected in a modified operating mode, it is not taken into account in the evaluation of the measured values and the evaluation is carried out on the basis of the other measured values which are not affected by the malfunction. Or the measured value affected by the malfunction is not detected at all in the modified operating mode.
  • the relevant light source can be omitted in a lighting sequence, or the relevant measured value can not be detected or taken into account in the evaluation.
  • the measured value of the relevant measuring track can be omitted, eg ignored during the evaluation.
  • the value documents in the modified operating mode are preferably tested exclusively on the basis of measured values of the sensor whose generation is not dependent on the radio frequency. disorder is affected.
  • the examination of the value documents is carried out, for example, on the basis of previously provided measured values which are not affected by the malfunction and on the basis of one or more additional measured values which are not affected by the malfunction.
  • the modified operating mode differs eg by an im Compared to the intended operating mode modified excitation, in an optical sensor, for example by using a different light source.
  • the senor responds to one or more malfunctions in this way.
  • the sensor may respond in the same or different ways.
  • there may be other malfunctions of the sensor resulting in a malfunction of the sensor, e.g. if the sensor does not have a modified operating mode for this malfunction to avoid the malfunction.
  • the sensor can save information about the detected malfunction to a fault memory so that information about the detected malfunction is available later. If the sensor detects a malfunction and the malfunction detected would not hinder the checking of the value documents, the sensor carries out the verification of the value documents in the intended operating mode. In this case, no workaround is necessary and the detected malfunction can be ignored when checking the value documents.
  • the sensor If, in the course of its self-test, the sensor detects a malfunction that would impede the checking of the value documents and the malfunction can be bypassed, the sensor responds by replacing the intended operating mode by the modified operating mode or the intended operating mode to check the value documents suitably modified, and performs the examination of the value documents in the modified mode of operation.
  • the sensor on the same malfunction in certain other cases, when malfunction is not bypassable, it responds by the sensor issuing an error message that indicates a malfunction of the sensor or a specific function of the sensor.
  • the error message can be displayed by the sensor itself and / or sent via the Karlurükationsterrorism to the device to display the error message and / or further processed.
  • the self-test is carried out in particular by a sensor already installed in a device for documentary value verification.
  • the sensor carries out the self-test e.g. in the meantime between the examination successively to be examined value documents. Additionally or alternatively, however, the sensor may also perform the self-test prior to starting the value-document check, e.g.
  • the information about how the sensor can react to the detected malfunction can be found, for example, in FIG. stored in the data memory of the sensor. It is advantageous that the sensor can perform its self-test completely independently and the sensor, for example. no data exchange with its environment needed. Alternatively, the information on the different reactions can also be supplied to the sensor from outside, e.g. through the above device.
  • the self-test includes, for example, a check of the function of at least one light source of the sensor and / or at least one photodetector of the sensor.
  • a portion of the light of the light source reflected at a window of the sensor is detected by the photodetector, while no value document is present in the detection range of the sensor.
  • this self-test no test medium and no value document is required, the self-test of the sensor is possible even before the beginning of the value document check.
  • this self-test can also be used to check measuring tracks of the sensor which lie outside the value document to be checked.
  • the self-test in each of these gaps or regularly after a certain time or number of value documents or the self-test can be performed before switching to other value documents. If the self-test of the sensor is carried out in this way, this not only includes a check of the function of the light sources, but automatically also a check of the function of the photodetector. With the aid of logical analyzes, it can be determined which of the light source and / or the photodetectors are affected by the malfunction. If, for example, the light of several light sources is detected in succession with a specific photodetector, and the photodetector detects an insufficient signal when each of these light sources is switched on, it can be concluded that there is a malfunction of the photodetector or the electronic circuit connected thereto.
  • the photodetector When the photodetector On the other hand, if only one of these light sources detects an insufficient signal, a malfunction of this light source or its power supply or activation is inferred. A malfunction can already be detected due to an insufficient measured value or first through several measured values that indicate a malfunction. In addition or as an alternative, the sensor can perform other self-tests and identify malfunctions using other methods. Depending on which malfunction is detected and whether or not it can be bypassed, the sensor may use one of its modified operating modes to check the value documents.
  • the sensor is an optical sensor which detects the light emanating from the value documents at several wavelengths, in the modified operating mode for checking the value documents at least one measured value which is detected at a different wavelength than the measured values which are the are provided in the intended operating mode for checking the value documents.
  • the measured value detected when lighting with a different wavelength can be used.
  • this can be achieved, for example, by a spectrally different illumination and, if appropriate, a correspondingly adapted evaluation.
  • spectrally different photodetectors a measured value at a different wavelength can be detected and evaluated with the same illumination.
  • the functional failure of a light source or of a photodetector can be avoided if a spectrally adjacent light source or a spectrally adjacent photodetector is also suitable for testing the feature.
  • the sensor is an optical sensor which detects the light emanating from the value documents at several wavelengths
  • at least one derived measured value can be used in the modified operating mode for checking the value documents, for example instead of the measured value affected by the functional disturbance.
  • the use of a derived measured value, eg interpolated or extrapolated measured value has the advantage that the evaluation can remain substantially the same, since only the step of deriving needs to be inserted before the evaluation, but otherwise the evaluation can remain the same.
  • the interpolated measured value is interpolated, for example, from the detected measured values, which are detected spectrally on both sides adjacent to the measured value affected by the malfunction.
  • one of the light sources instead of the measured value detected when illuminated by the malfunctioning light source, will use an interpolated reading interpolated from readings obtained by illumination
  • An optical sensor having a plurality of light sources may, in the modified mode of operation, in the event of a malfunction of one of the light sources, use one or more light sources other than the intended mode of operation to test the value documents.
  • the lighting can be switched to one or more other light sources.
  • the examination of the value documents is carried out, for example, exclusively on the basis of those light sources which are not affected by the malfunction. Instead of the light source affected by the malfunction, the spectrally identical wavelength can be used if present in the sensor.
  • one or more light sources be used sources of another wavelength, the spectrum of which differs from the intended in the intended operating mode light source.
  • the sensor is a sensor with a plurality of measuring tracks transverse to a transport direction of the documents of value along which the documents of value are transported past the sensor for their testing, in the modified operating mode, in the event of a malfunction, one of the measuring tracks can be used to check the documents of value Measured value of the functionally faulty measuring track, a derived measured value can be used. This can be interpolated from the measured values of the measuring tracks adjacent to the malfunctioning measuring track. In this case too, the evaluation can advantageously remain essentially the same since only one interpolation step is necessary before the evaluation.
  • the senor in the case of a malfunction of one of the measuring tracks, can use the measured value of another measuring track, which is closest to the malfunctioning measuring track, instead of the measured value of the malfunctioning measuring track instead of the measured value of the malfunctioning measuring track.
  • the sensor can use the measured value of another measuring track, which is closest to the malfunctioning measuring track, instead of the measured value of the malfunctioning measuring track instead of the measured value of the malfunctioning measuring track.
  • the invention also relates to a sensor which is designed to test value documents and which is designed to carry out the self-test according to the invention, for example, is programmed, in which the sensor checks its functionality.
  • the sensor responds to a malfunction identified in the context of the self-test which would hinder the examination of the value documents by using a modified operating mode for checking the value documents instead of the intended operating mode at least one other measured value of the sensor is used for checking the value documents than is determined in the operating mode provided for checking the value documents.
  • the sensor is also programmed to subsequently test the value documents in the modified operating mode.
  • a data memory of the sensor In a data memory of the sensor, one or more intended operating modes or information about these and one or more modified operating modes or information about them can be stored, from which the sensor can extract or deduce how to react to the respective malfunction.
  • the data memory can be integrated in the housing of the sensor or the data memory is an external data memory, eg data memory of the device to which the sensor is connected.
  • different operating modes can be provided in the sensor.
  • stored in the data memory of the sensor for each of the various features in each case a designated operating mode or information on the respective intended operating mode, which the sensor used to test the respective feature.
  • a designated operating mode or information on the respective intended operating mode which the sensor used to test the respective feature.
  • the sensor Before the sensor performs its self-test, at least one of the features to be tested by the sensor can be selected. In the self-test of the sensor, it can be provided that the sensor evaluates differently a malfunction detected in the self-test as a function of the selected feature and that the sensor reacts differently to the malfunction detected in the self-test as a function of the selected feature.
  • the sensor can differently evaluate the malfunction as a function of the spectral properties of the selected feature and react differently to the malfunction, in particular as a function of the spectral position and / or the spectral profile of the feature. If the sensor is a sensor having a plurality of measuring tracks transverse to a transport direction of the value documents, the sensor can differently assess the detected malfunction depending on the position of the respective feature on the value document and react differently to the detected malfunction.
  • the information about the different reactions that the sensor, depending on the selected feature, to perform in the detected malfunction for example, stored in the data memory of the sensor. From this information, the sensor can derive or extract the different reactions.
  • the senor evaluates differently a malfunction detected as part of its self-test as a function of the selected value document type and that the sensor reacts differently to the malfunction detected as part of the self-test as a function of the selected value document type.
  • value document types For example, banknotes, checks, ID cards, credit cards, check cards, tickets, vouchers or a particular type or version thereof are referred to as value document types.
  • the value document type can also be a selection of several different types of value documents, for example value documents with specific characteristics or value documents with specific size specifications.
  • the value document type may be the denomination, the currency, the issue, or an indication of a selection of different denominations and / or currencies.
  • Figure a shows a sensor for checking value documents, the one
  • FIG. 1b shows a value document type W equipped with two features
  • FIG. 2 a shows a spectral distribution of the light emanating from a feature of a value document for two features
  • FIG. 2b shows four malfunctions and associated different reactions of the sensor for two different features
  • FIG. 3 Flow chart for the sequence of the self-test.
  • FIG. 1 shows a sensor which carries out a self-test according to the invention.
  • an optical sensor 100 has been selected which has measuring elements 4, including one or more light sources 41 and one or more photodetectors 43, and optionally further optical elements such as lenses, filters, etc ..
  • a document of value 10 to be tested is checked while this is transported past the sensor 100 along a transport direction T.
  • the value document 10 when it is within the detection range of the sensor, it is illuminated by the light emitted by the light source (s) 41 and the light emitted by the value document as a result of the illumination is detected by the photodetector (s). en) 43 detected.
  • the luminescent light or remission light of the value document 10 is detected.
  • the optical sensor 100 is designed to detect the light emitted by the value documents at several different wavelengths ⁇ 1 to ⁇ 7, cf. see Figure 2a.
  • the detector has, for example, several light sources with different emission spectra or several re photodetectors with spectrally different sensitivity, eg equipped with different filters photodetectors.
  • Figure 2a shows for two features M1 and M2 of value documents, e.g. Authenticity features, the respective spectral intensity distribution of the light emitted by a value document with the respective feature.
  • FIG. 1b above shows by way of example a value document type W which is equipped with the two features M1, M2.
  • Figure 1b center shows another value document type Wl, which has only the feature Ml and
  • Figure 1b below shows another other value document type W2, which is equipped only with the feature M2. Since the two features M1, M2 are present at different positions on the respective value document, different measurement tracks are relevant for the examination of the two features M1 and M2.
  • the sensor 100 has a control device 3, e.g. a processor which controls the measuring elements 4 both for carrying out the self-test and for checking the features and evaluates the measured values detected in accordance with the respective operating mode.
  • the information on the operating modes from Table 6 are included, cf. FIG. 2b, by which the operating modes B1, B2 are assigned to the features M1, M2, which the sensor during the test should use the respective feature.
  • the information on the operating mode here include the wavelengths and measuring tracks to be evaluated during the test of the respective feature and the evaluation to be used.
  • the wavelengths ⁇ ,% 3, ⁇ , ⁇ 6 and ⁇ 7 are provided for evaluation, specifically in the measuring tracks L8 to L10.
  • Table 6 also contains information on the reactions Rl, R2,... Of the sensor for detected malfunctions.
  • the information of table 9 can be contained in the data memory 5, by means of which the sensor can determine the associated features Mn from a selected value-document type Wn.
  • further information for checking the features may be stored in the data memory 5, for example reference data of the respective feature, with which the detected measured values are compared during the examination of the feature.
  • the sensor 100 also has a communication interface 2, via which it can receive and output information.
  • information about which of the various features Mn or which of the value-document types Wn is to be tested by the sensor can be supplied to the sensor 100 before the value-document check via the correlation interface 2.
  • the sensor is supplied to the sensor via the Kornmunikationssammlungstelle 2 that he should check the feature Ml.
  • the value document types W1 and W2 it is sufficient for the value document types W1 and W2 to communicate to the sensor only the value document type.
  • the sensor is informed that the value document type Wl should be checked.
  • the sensor can unambiguously determine the feature M 1 to be tested from this value-document type W 1, analogously to M 2 from W 2.
  • the sensor may perform the value-document check without prior selection of a feature Mn or a value-document type Wn, e.g. if only one operating mode is provided in the sensor 100, in which the sensor checks one or more specific features Mn. For example, only the operation mode Bl is provided, so that the selection of the feature Ml is omitted. For certain malfunctions for which a bypass is provided, then a modified operating mode Bl 'is used, cf. FIG. 2b.
  • the function of the light sources 41 of the sensor is checked as part of the self-test.
  • the light sources 41 in the gap between two documents of value 10 are switched on one after the other and in each case the light of the light sources partially reflected back on the window 8 of the sensor is detected with the aid of the photodetector 43.
  • the sensor 100 determines whether a malfunction of the respective light source 41 is present or not. A malfunction of a light source is detected, for example, when the detected light intensity of the light source falls below a certain minimum value.
  • the self-test may additionally or alternatively comprise a check of electronic components of the sensor, eg by testing an electrical voltage. Even with a malfunction of a component, the function of which depends on the light source or the photodetector, the sensor can use the respective modified operating mode.
  • the sensor Mn or the value-document type Wn to be tested can be informed via the communication interface 2 of the self-test. This can be done before or during the value document check.
  • the sensor 100 then performs the self-test before or during the value document check, for example in the gap between two value documents.
  • the sensor decides the result of the self-test: If the sensor passes the self-test, the test of the selected feature Mn is performed on the respective value documents having the feature Mn. However, if the sensor detects a malfunction F, the self-test will fail.
  • test step S20 the sensor checks whether the detected malfunction F for checking the selected feature Mn is relevant or not.
  • Corresponding information 6 is stored in the data memory 5, cf. Figures la and 2b. If the malfunction F does not hinder the test of the feature Mn, the test of the selected feature is carried out as intended. However, a corresponding entry is written in the error memory 7 of the sensor. If, in the test step S20, the sensor determines that the detected malfunction F hinders the test of the selected feature Mn, the sensor distinguishes between the two cases, whether the malfunction F in the selected feature Mn is bypassed or not (test step S30).
  • the sensor 100 checks whether its data memory 5 for the selected feature Mn contains information about how to deal with the detected malfunction F in the case of the feature Mn, for example, whether for the selected feature Mn information for a modified Operating mode to bypass the detected malfunction F are included. If no modified operating mode is provided for the selected feature Mn, with which the malfunction F is to be avoided, the sensor determines that it is not functional for checking the feature Mn and outputs a corresponding error message, eg via the communication interface 2 to the outside and writes a corresponding entry in the error memory 7. For example, the examination of the value documents is then stopped.
  • the value documents for which this feature Mn is to be checked can also be rejected during the check (reject filing), while the remaining value document types are checked as intended.
  • the sensor 100 finds in Table 6 information on a modified mode of operation by which the detected malfunction F is bypassable for the selected feature Mn, it selects that modified mode of operation. In this way, the sensor bypasses the detected malfunction F and the check of the selected feature Mn is performed in the modified mode of operation.
  • FIG. 2b shows four examples of malfunctions F1-F4 and, in each case, information on how the sensor evaluates one and the same malfunction differently depending on the characteristic M1 or M2 and reacts differently to each of them:
  • a malfunction Fl of the light source X3 is detected. If the feature M1 has been selected, the sensor determines, based on the information on the operating mode B1, that this malfunction F1 would hinder the functioning of the sensor. On the basis of the information in Table 6, however, the sensor determines that the malfunction Fl for the feature M1 can be circumvented by the fact that - instead of the measured value detected when lighting with the functionally defective light source ⁇ 3 - another measured value for checking the feature Ml is used, namely the detected during illumination with the functional light source X measured value, see. FIG. 2a. In the case of feature M2, the sensor of table 6 deduces that the malfunction Fl is relevant for the examination of this feature M2 and can not be bypassed. The sensor then gives an error message that it is not functional for checking the feature M2 or the relevant value documents due to the malfunction F of the light source ⁇ 3 .
  • a malfunction F2 of the light source X5 is detected. If the feature Ml has been selected, the sensor determines from the information on the operating mode Bl that this malfunction F2 would hinder the functioning of the sensor. Based on the information in Table 6, the sensor also notes that the func- disturbance for this feature Ml is not bypassable. The sensor then gives an error message that it is not functional due to the malfunction F2 of the light source Xs for testing the feature Ml or the relevant value documents. However, in the case of the feature M2, the malfunction F2 can be bypassed by not using the measured value for checking the feature M2 detected in lighting with the malfunctioning light source s, as is provided in the operating mode B2, but instead dispensing with the relevant measured value , see. FIG. 2a.
  • a malfunction F3 of the light source ⁇ is detected. If the feature Ml has been selected, the sensor determines from the information on the operating mode Bl that this malfunction F3 would hinder the functioning of the sensor. However, based on the information in Table 6, the sensor determines that the malfunction for this feature M1 can be bypassed by using another measurement, by interpolating the measurements detected at ⁇ 5 and ⁇ 7. The measured value detected at illumination with ⁇ 6 is then replaced by the measured value ⁇ calculated by means of interpolation for the evaluation. In the case of the feature M2, the sensor takes the information to the operating mode B2 that the check of the feature M2 by the malfunction F3 is not hindered. The examination of the feature M2 or the relevant value documents can be carried out with the intended operating mode B2.
  • a malfunction F4 of the measuring track L5 is detected, eg a malfunction of the photodetector of the measuring track L5. If the feature Ml has been selected, the sensor determines from the information on the operating mode Bl that this malfunction F4 does not hinder the test of the feature Ml. The examination of the feature Ml or the relevant value documents can be carried out with the intended operating mode Bl. In the case of Feature M2, the sensor of Table 6 deduces that the malfunction F4 would hamper the functioning of the sensor, but for this feature M2, it can be bypassed by using another measurement, by interpolating the measurements made in measurement lane L4 and in measurement lane L6 are detected. The measured value from measuring track L5 is then replaced by the measured value L5 * calculated by means of interpolation for the evaluation.
  • the self-test e.g. in each case only those light sources or photodetectors are checked, which are provided for testing the respectively selected feature. If the feature Ml has been selected, the self-test can be limited to the light sources of the wavelengths ⁇ , ⁇ 3, ⁇ , ⁇ and ⁇ in the measuring tracks L8 to L10. And if the feature M2 was selected, the self-test can be limited to the light sources of the wavelengths ⁇ to ⁇ in the measuring tracks L3 to L10.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)

Abstract

L'invention concerne un capteur destiné à contrôler des documents de valeur, réalisant un test automatique pour contrôler son fonctionnement. Lors du test automatique, le capteur réagit à au moins un défaut de fonctionnement détecté dans le cadre du test automatique, qui empêcherait le contrôle des documents de valeur, de telle manière que pour contrôler les documents de valeur, le capteur adopte, à la place du mode de fonctionnement prévu pour le contrôle des documents de valeur, un mode de fonctionnement modifié dans lequel au moins une autre valeur de mesure du capteur est employée pour le contrôle des documents de valeur, par rapport au mode de fonctionnement prévu pour le contrôle des documents de valeur. Contrairement à l'arrêt de fonctionnement habituel du capteur, le capteur peut fonctionner pour le contrôle des documents de valeur malgré le défaut de fonctionnement.
PCT/EP2012/003455 2011-08-17 2012-08-13 Capteur et procédé pour faire fonctionner ce capteur WO2013023777A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES12751261T ES2859675T3 (es) 2011-08-17 2012-08-13 Sensor y procedimiento para operar el sensor
EP12751261.4A EP2745279B1 (fr) 2011-08-17 2012-08-13 Capteur et procédé pour faire fonctionner ce capteur
US14/238,812 US9245400B2 (en) 2011-08-17 2012-08-13 Sensor and method for operating the sensor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011110895.9 2011-08-17
DE102011110895A DE102011110895A1 (de) 2011-08-17 2011-08-17 Sensor und Verfahren zum Betreiben des Sensors

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WO2013023777A1 true WO2013023777A1 (fr) 2013-02-21

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PCT/EP2012/003455 WO2013023777A1 (fr) 2011-08-17 2012-08-13 Capteur et procédé pour faire fonctionner ce capteur

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US (1) US9245400B2 (fr)
EP (1) EP2745279B1 (fr)
DE (1) DE102011110895A1 (fr)
ES (1) ES2859675T3 (fr)
WO (1) WO2013023777A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN106251474B (zh) * 2016-07-27 2019-08-27 深圳怡化电脑股份有限公司 金融自助设备的传感器异常容错方法及装置

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Also Published As

Publication number Publication date
DE102011110895A1 (de) 2013-02-21
ES2859675T3 (es) 2021-10-04
ES2859675T8 (es) 2022-01-17
EP2745279B1 (fr) 2021-03-10
EP2745279A1 (fr) 2014-06-25
US9245400B2 (en) 2016-01-26
US20140204366A1 (en) 2014-07-24

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